Souldio&trade; [2015 Mini Bluetooth 4.0 Audio Receiver Adapter with A2DP for CD Sound Quality, Added MP3 Player Function with SD Card Play and 3.5mm AUX Input Jack in for Home Stereo Audio, Car Aux In, Portable Speaker and Headphones (black) Bluetooth Function: Make wired to wireless and normal speakers to wireless bluetooth speakers to match any bluetooth enabled devices, such as mobile phone, laptops, iPad, speaker and Bluetooth audio transmitter. [MP3 Player Function] Turn to yellow led, directly insert TF card to play music connect 3.5mm stereo to speakers or headphones, you can store all your music on it and play straight to your stereo system, this unique feature makes the unit outstanding among only bluetooth receiver function, it worth owning. Receives music from up to 30 feet (10 meters) away so you don't need to dock your Bluetooth device. HiFi sound quality, support A2DP, designed for home AV systems, home stereos, headphones, car or motorcycle speakers, boats, RVS and more; Built-in 3.7V 450mA Li-polymer battery charged using micro USB cable; Before start to use it, please fully charged it. [Perfect Choice for Gift]Fathers Day,Thanksgiving Day or Christmas Day all on the way, get it to present others as a gift, make them happy and make their antique home stereo live again.